Electric chamber



Sept. 10, 1929- E. STALLWORTH ELECTRIC CHAMBER Filed Sepm lZ, 1927 Patented Sept. 10, 1929.

UNITED STATES PATENT OFFICE.

ELBERT STALLWORTH, OF AMEBICUS, GEORGIA ELECTRIC CHAMBER.

Application filed September 12, 1927. Serial No. 218,981.

The invention relates to improvements in electric chambers by means of electric heatiiig wire arrangement,- and the objects of the improvement are: 1. To warm the chamber during cold weather, especially at night after retirement, that it may be comfortably used by children or other persons sensitive to the I illustrates a general view of the chamber,

showing out and inside sections of same with asbestos and rubber padding arrangement of seat; also view of handle with terminal connections which include detail illustrations: handle 19, shield 13, plug receptacle 16, in-

sulated plates 14, terminal opening insulation 15, terminals '12 and connection wires 18 which extend to heating wire 4. Fig. 2 is a diagram illustrating the several phases of thechamber. Fig. 3 is a view of push button plug mechanism.

The following is a detail description of the chamber: In Fig. 2,. the bands 2 and 6 are riveted together. The ends of band 6 are fastened together under handle by bolt and nut 11. The ends of band2 are concealed under handle by, shield 13. said ends do not quite meet but allow suflicient space for connection wire to extend to heating wire. Tape is carefully wrapped around connection wires under handle and stuffed between same under shield 13. The ends of mica 3 and 5 extend over the ends of band 2which are slightly turnedoutward under shield 13. Strips of said mica are used also to insulate the inside portions of bands 2 and 6 which inclose the electric heating wire 4. Figures 1 and 2 illustrate wire guard 1 which extends around bands 2 and 6. The purpose of the guard is to prevent children or other persons from bemg burned while using the chamber.

In Fig. 1, seat and a portion of the inside wall 10 of thechamber consist of seat part 20 under which there is a pad composed of two strips of rubber 9 and one of asbestos 8. The asbestos is used next to the body of the chamber to prevent the rubber 9 from being scorched While chamber is being used. The asbestos is also used to retain heat in the seat of the chamber after electric current is cut ofl' that several children may be served after each heating before the chamber becomes cold. The rubber strips are used over asbestos to prevent portion of seat 20 from getting too hot for. use after current is on from 25 to 45 seconds. The rubber also mortifies the heat whichis conducted from the heating .element to the seat. The outer edge of seat covering 20 is soldered or welded under the brim of .chamber while the other portion forms a wall, extends downward inside of the chamber about 1%" and is soldered or welded to same.

Fig. 3 illustrates plug mechanism to chamher which consists ofall parts of plug fitted in one sideof case in the following manner: One wire from electric cord extends to contact part 21 while. another wire from electric cord extends to lever 22 which is attached to push button stem 23. A small wire attached to contact 24: extends to aposition where lever22 will touch same when push button 26 is pressed slightly downward, held in this position by a notch in its stem caught under part 27; when the button 26 is pressed slightly forward, spring 28 causes same to rebound to its original position which cuts off electric current from chamber. The plug case consists of two insulated parts held in position by two small bolts with nuts. The plug fits opening 17 in plug -receptacle 16 illustrated in Figures 1 and 2.

I claim:

In an electrically heated device of the character described, a vessel comprisin a heatin unit extending around the uppere ge of sai vessel and bolted thereto, said heating unit Y consisting of two metallic bands ,inclosing re- 5 sistance wires between strips of mica; a rubher and asbestos seat arran ed about the open end of said vessel imme iately above said heating unit, and a lugreceptacle attached to said vessel, said plbg receptacle consisting of two contact prongs and a socket for said contact pron LBERT STALLWORTH. 

